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Example CompTIA A+ flashcards
What are the two main CompTIA A+ certification exams?
Core 1 (220-1101) and Core 2 (220-1102). Both must be passed within 3 years to earn A+ certification.
Define POST (Power-On Self Test).
Diagnostic routine run by BIOS/UEFI at startup to verify hardware components are functioning before loading the operating system.
What is the difference between UEFI and BIOS?
BIOS uses 16-bit code and supports drives up to 2TB; UEFI uses 32/64-bit code, supports larger drives, offers Secure Boot, and has a graphical interface.
Explain the purpose of Device Manager in Windows.
System utility used to view, update, and troubleshoot hardware devices and their drivers; displays device status and driver information.
What is the function of Event Viewer in Windows?
Administrative tool that logs and displays system, security, and application events; used for troubleshooting hardware and software issues.
What does RAID 1 provide?
Mirroring: data is duplicated across two drives, providing redundancy and fault tolerance but no performance gain or storage increase.
Define preventive maintenance for IT equipment.
Scheduled, proactive tasks (cleaning, firmware updates, cable verification) performed regularly to prevent hardware failures and extend equipment lifespan.
What is the OSI model layer responsible for IP addressing?
Layer 3 (Network Layer). IP (IPv4/IPv6) operates at this layer to route packets between networks using logical addresses.
Explain the difference between TCP and UDP.
TCP is connection-oriented, reliable, and ordered; UDP is connectionless, faster, and unreliable. TCP for email/web; UDP for streaming/VoIP.
What is the purpose of Group Policy in Windows domain environments?
Centralized management tool that applies security settings, software installations, and configurations to multiple computers and users across a network.
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